cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A129174 Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n such that the sum of the peak-abscissae is k (0 <= k <= n^2).

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 0
5 1
6 0
7 1
8 0
9 0
10 0
11 1
12 0
13 1
14 1
15 1
16 0
17 1
18 0
19 0
20 0
21 0
22 1
23 0
24 1
25 1
26 2
27 1
28 2
29 1
30 2
31 1
32 1
33 0
34 1
35 0
36 0
37 0
38 0
39 0
40 1
41 0
42 1
43 1
44 2
45 2
46 3
47 2
48 4
49 3
50 4
51 3
52 4
53 2
54 3
55 2
56 2
57 1
58 1
59 0
60 1
61 0
62 0
63 0
64 0
65 0
66 0
67 1
68 0
69 1
70 1
71 2
72 2
73 4
74 3
75 5
76 5
77 7
78 6
79 9
80 7
81 9
82 8
83 9
84 7
85 9
86 6
87 7
88 5
89 5
90 3
91 4
92 2
93 2
94 1
95 1
96 0
97 1
98 0
99 0
100 0
101 0
102 0
103 0
104 0

List of values

[1, 0, 1, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 2, 1, 2, 1, 2, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 2, 2, 3, 2, 4, 3, 4, 3, 4, 2, 3, 2, 2, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 2, 2, 4, 3, 5, 5, 7, 6, 9, 7, 9, 8, 9, 7, 9, 6, 7, 5, 5, 3, 4, 2, 2, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0]